Rison



(No Model.)

W. M. HARRISON.

LAMP.

No. 535,135. Patented Mar. 5, 1895.

INVENT-QR WITNESSES Nrtnp STATES VILLIAM MURRAY HARRISON, OFWILLIAMSPORT, PENNSYLVANIA.

LAMP.

. SPECIFICATION forming part of Letters Patent No. 535,135, dated March5, 1 S95.

Application iiled December '7, 1894. Serial No. 531.118. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM MURRAY HAR- RISON, a citizen of the UnitedStates, residing at Williamsport, in the county of Lycoming and State ofPennsylvania, have invented certain new and useful Improvements inFlame- Controlling Devices for Miners and other Lamps; and I do herebydeclare the following to bea full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

Heretofore miners lamps have sometimes been provided with a bail orpivoted device adapted to be turned up into or against the flame forconducting the heat to the body of the-lamp and melting paraflne orsimilar fuel employed therein; also a lamp has sometimes been providedWith a wire or other metallic piece held against one side of the flamebut leaving the other side free; also, a device having the form of ashears with curved blades has been applied below or around the flame ofa candle or lamp, so as to affect the` supply of air thereto.

The object of this invention is to lessen the smoking of lamps byapplying governing devices to opposite sides of the flame, whereby thelatter is compressed into a flatter form than it otherwise would take,but the air is not cut oi from the edges of the dame. This compressingaction secures for the dame its maximum candle power Without smoking; animportant consideration in miners lamps especially, as miners oil,though nominally vegetable, is habitually adulterated withsmoke-evolving petroleum. To effect this I employ pivoted bails, whichare turned up at against the opposite sides of the flame, so that theflame is compressed and iiattened for conl trolling it substantially ashereinafter more 'the air to the edges of the flame.

means of attaching the flame controlling device.

A designates a miners lamp of the ordinary form, having an air-inlet a,a suspending hook G, a spout B and a wick-tube C. The said wick-tubeincloses a wick D and is provided with opening C to let the oil or otherfuel of the lamp have access thereto.

E, designates a pair of bails mounted on pivots e and turning up againstopposite sides of the flame to regulate it. Vhen such hails are pivoteddirectly to the wick-tube they heat the lamp too much. Therefore it isfound best to make use of intervening supports or means of attach-mentwhich by their construction or material reduce the heat thus transmittedto an imperceptible amount. As shown in Figs. l and 2, a wire II bent innumerous folds and attached to the lamp at its bottom only may be thusemployed; or I may substitute therefor a sheet of metal I cut intocorresponding form and similarly fastened. In either case the heatisdissipated in the air in passing through the length of wire or narrowmetal, exposed on every side to the air. When the bails composing thesaid heat controlling deviceE are turned up against the opposite sidesof the flame, they compress the same slightly giving it a flatter form,but not inclosing the edges of the flame. The said ilarne controllingdevice also protects the flame somewhat against currents of air; andmakes combustion more perfect by reason of its heat acquired from thesaid flame. It must not be brought together sufficiently to obstruct thesaid flame or draw it down, but only so as to keep it compact andsymmetrical. The bails constituting the said name-controlling devicepress against the dame on two sides only and thus atten it, Whileleaving free and absolutely unobstructed access of The practical effectis a very decided reduction of smoke or total illumination thereof,while retaining the full illuminating power of the lamp.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A lamp provided with a flame controlling device, consisting ofseparate parts adapted IOO to be adjusted into position against oppositesides of the flame, thereby compressing and flattening the latter, Whileleaving free and unobstructed access of air to the edges of the flamesubstantially as set forth.

2. A lamp provided With a flame controlling device, consisting of a pairof pivoted balls arranged to be turned up against opposite sides of theflame, thereby compressing and flattening the latter While leaving freeand unobstructed access of air to the edges of the flame substantiallyas set forth.

3. Alamp provided With a flamecontrol1ing device consisting of separateparts adapted to be adjusted into position against opposite sides of theflame, lthereby compressing and flattening the latter While leaving freeaccess of air to the edges of the flame, the said flamecontrollingdevice being connected to the said lamp solely by a long bent Wire H orequivalent support whereby the heat of the flame is prevented fromreaching the body of the lamp substantially as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM MURRAY HARRISON.

Witnesses:

PARKS R. MCBRIDE, E. L. WHITE.

